# mikeash/MAObjCRuntime

ObjC wrapper for ObjC runtime API

Repository: https://github.com/mikeash/MAObjCRuntime
Canonical: https://ross.abutalabs.com/products/maobjcruntime
Language: Objective-C
License: NOASSERTION
License Family: other
Last push: 2021-09-02T01:23:01+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5832, "days_push": 1827, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1530, forks 188 (observed 2026-08-28T04:04:59.270016+00:00)

## What it is
MAObjCRuntime is an Objective-C wrapper around the Objective-C runtime C APIs, providing an object-oriented interface for querying and manipulating classes, methods, and instance variables. It supports tasks like listing subclasses, swizzling method implementations, creating classes at runtime, and dynamically sending messages.

## Use cases
- introspect Objective-C class methods and ivars at runtime
- enumerate all subclasses of a class
- swizzle method implementations
- create new Objective-C classes programmatically
- dynamically invoke methods discovered via the runtime
- get the true class of an object bypassing -class overrides

## When to avoid
- you target Swift-only or non-Apple platforms
- you need actively maintained code with recent updates
- you only need basic runtime features already covered by modern language APIs

## Facets
- artifact type: library
- maturity: maintenance
- function: developer-tools
- domain: developer-tools, programming-languages
- platform: cpp
- tags: objective-c, objc-runtime, introspection, method-swizzling, wrapper, macos, ios

## Member repositories
- mikeash/MAObjCRuntime (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:59.270016+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:31:25.832407+00:00, confidence not recorded.
  - readme: https://github.com/mikeash/MAObjCRuntime (fetched 2026-08-28T04:04:59.270016+00:00, sha 2e1f9531dd75)
- Data as of 2026-08-30T08:39:29.467469+00:00.